Citação norma APA

Guffey, M. E., & Loewy, D. (2010). Essentials of business communication (8th ed.). South-Western/Cengage Learning.

Citação norma Chicago

Guffey, Mary Ellen, and Dana Loewy. Essentials of Business Communication. 8th ed. Mason, Ohio: South-Western/Cengage Learning, 2010.

Citação norma MLA

Guffey, Mary Ellen, and Dana Loewy. Essentials of Business Communication. 8th ed. South-Western/Cengage Learning, 2010.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.